} } #define MAX_PROCESSES 255 int number_of_processes = 0; /* the implementation of fork() calls this function */ int allocate_process() { int new_pid; if (number_of_processes == MAX_PROCESSES) return -1; ple for allocating and releasing processes shown in Figure E6.21. else { /* allocate necessary process resources */ ++number_of_processes; return new_pid; } /* the implementation of exit() calls this function */ void release_process() { /* release process resources */ --number_of_processes; Figure E6.21 Allocating and releasing processes for Exercise 6.27. a. Identify the race condition(s). 4 b. Assume you have a mutex lock named mutex with the operations acquire() and release (). Indicate where the loc needs to be placed to prevent the race condition(s). c. Could we replace the integer variable int number_of_processes = 0 with the atomic integer atomic_t number_of_processes = 0} to prevent the race condition(s)?

} } #define MAX_PROCESSES 255 int number_of_processes = 0; /* the implementation of fork() calls this function / int allocate_process() { int new_pid; if (number_of_processes == MAX_PROCESSES) return -1; ple for allocating and releasing processes shown in Figure E6.21. else { / allocate necessary process resources / ++number_of_processes; return new_pid; } / the implementation of exit() calls this function / void release_process() { / release process resources */ --number_of_processes; Figure E6.21 Allocating and releasing processes for Exercise 6.27. a. Identify the race condition(s). 4 b. Assume you have a mutex lock named mutex with the operations acquire() and release (). Indicate where the loc needs to be placed to prevent the race condition(s). c. Could we replace the integer variable int number_of_processes = 0 with the atomic integer atomic_t number_of_processes = 0} to prevent the race condition(s)?

Name: }6.22 Consider the code example for allocating and releasing processe
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Description: }6.22 Consider the code example for allocating and releasing processes shown in Figure E6.21.#define MAX_PROCESSES 255int number_of_processes = 0;}/* the implementation of fork() calls this function */int allocate_process() {int new_pid;if (number_o

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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